Correct option is D
Explanation:
We need to review each statement to determine which one(s) are correct.
A. The scutellum forms the interface between the embryo and the starchy endosperm tissue.
This statement is correct. The scutellum is a modified cotyledon in grasses, and it forms a critical interface between the embryo and the starchy endosperm, which provides nutrients for the growing seedling during germination.
B. Coleorhiza protects and covers the first leaf while buried in the soil.
This statement is incorrect because the coleorhiza actually covers the radicle (embryonic root), not the first leaf. The first leaf is protected by the coleoptile, not the coleorhiza.
C. Coleoptile forms a protective sheath around the radicle.
This statement is incorrect. The coleoptile forms a protective sheath around the first leaf (which is the shoot), not the radicle (root). The radicle is protected by the coleorhiza, while the coleoptile protects the shoot during germination.
D. In some species such as maize, the upper hypocotyl has been modified to form a mesocotyl.
This statement is correct. In maize, the upper hypocotyl does indeed develop into the mesocotyl. The mesocotyl is a specialized part of the hypocotyl that helps the seedling push through the soil during germination. This is true for certain species, such as maize, where it assists in seedling emergence.
